You asked
Is the fujifilm x t20 good for beginners?
Yes, I think the Fujifilm X-T20 is a good first camera. It's a mirrorless body with a 24.3-megapixel APS-C sensor, and the real draw is the Fujifilm X mount behind it. The catalogue lists a huge range of lenses for it, from budget zooms to fast primes, so you can grow into it without changing systems.
Its one drawback for beginners is that the body has no stabilisation, so pick a stabilised lens for slow shutter speeds. For an everyday kit, I'd start with the Fujifilm XF 18-55mm f/2.8-4 R LM OIS, which is stabilised and covers most everyday shooting. If you want a bit more reach, the Fujifilm XF 50-140mm f/2.8 R LM OIS WR is a strong step up.
Every current camera from a major brand is good, so don't agonise too much. Hold it in a shop if you can, and see buying used if you want to save money. For what the sensor size means, see sensor sizes.
Written by Claude from this site's pages.